Octupole phonon model based on the shell model for octupole vibrational states

Yoshinaga, N.; Yanase, Kota; Higashiyama, Koji; Teruya, E.

doi:10.1103/physrevc.98.044321

Cited by 11 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the theoretical side, octupole deformation has been studied using a large variety of approaches going from macroscopic models to very sophisticated microscopic calculations. We can mention calculations based on macroscopic-microscopic models [9][10][11], self-consistent * knomura@phy.hr mean-field (SCMF) approaches with and without symmetry restoration , interacting boson models (IBM) [42][43][44][45][46][47][48][49][50][51][52][53][54][55], shell model [56,57], geometrical collective models [58][59][60], and cluster models [61,62]. Among the SCMF approaches it is worth noticing the recent calculations within the framework of the full symmetry-restored (angular momentum, particle number and parity) generator coordinate method (GCM) [63] based on the Gogny [6,31,64] and covariant [65] EDFs performed to analyze octupole correlations in the low-lying states of nuclei around 144 Ba.…”

Section: Introductionmentioning

confidence: 99%

Evolution of octupole deformation and collectivity in neutron-rich lanthanides

et al. 2021

View full text Add to dashboard Cite

The onset of octupole deformation and its impact on related spectroscopic properties is studied in even-even neutron-rich lanthanide isotopes Xe, Ba, Ce, and Nd with neutron number 86 N 94. Microscopic input comes from the Hartree-Fock-Bogoliubov approximation with constrains on the axially symmetric quadrupole and octupole operators using the Gogny-D1M interaction. At the mean-field level, reflection asymmetric ground states are predicted for isotopes with neutron number around N = 88. Spectroscopic properties are studied by diagonalizing the interacting boson model Hamiltonian, with the parameters obtained via the mapping of the mean-field potential energy surface onto the expectation value of the Hamiltonian in the s, d, and f boson condensate state. The results obtained for low-energy positive-and negative-parity excitation spectra as well as the electric dipole, quadrupole, and octupole transition probabilities indicate the onset of pronounced octupolarity for Z ≈ 56 and N ≈ 88 nuclei.

show abstract

Section: Introductionmentioning

confidence: 99%

Evolution of octupole deformation and collectivity in neutron-rich lanthanides

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In another recent experiment at Legnaro National Laboratory in Italy [21], a low-lying level scheme of 212 Rn has been populated. In this experiment, several non-yrast states based on πh 4 9/2 and πh 3 9/2 f 7/2 configurations have been identified. In this experiment, a 3 (−) collective state at 2.121 MeV is proposed.…”

Section: Introductionmentioning

confidence: 93%

“…In the recent past, there are several experimental measurements have been done to study the structure and collectivity in the Pb region [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Apart from this, a different class of correlations such as pairing, quadrupole, octupole is recently reported [15].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Systematic shell-model study of Rn isotopes with $A=$ 207 to 216 and isomeric states

Bhoy,

Srivastava

2021

Preprint

View full text Add to dashboard Cite

In the present work, we have performed systematic large-scale shell-model calculations for Rn isotopes with A = 207 to 216. For the 207−212 Rn isotopes, we have performed calculations with KHH7B interaction, while for 213−216 Rn isotopes with KHPE and KHH7B interactions. Calculations have been carried out with the KHH7B in a model space consisting of the proton orbitals d 5/2 , h 11/2 , d 3/2 and s 1/2 below the Z = 82 shell gap, and the h 9/2 , f 7/2 , and i 13/2 above it, and for neutron, the i 13/2 , p 3/2 , f 5/2 , and p 1/2 orbitals are below N = 126 shell gap, and the g 9/2 , i 11/2 , j 15/2 orbitals are above it. The calculations for KHPE interaction are performed in the full Z = 82-126 protonneutron model space with proton orbitals h 9/2 , f 7/2 , f 5/2 , p 3/2 , p 1/2 , and i 13/2 , and neutron orbitals i 11/2 , g 9/2 , g 7/2 , d 5/2 , d 3/2 , s 1/2 , and j 15/2 . The calculated energies and electromagnetic properties have been compared with the available experimental data. We have also analyzed several isomeric states from the calculated shell-model configurations and half-lives. In the case of even Rn isotopes, the 81 + isomeric state is due to seniority v =2, the 141 + and 171 − isomeric states are due to seniority v =4. For the odd Rn isotopes, the 13/21 + isomeric state is due to seniority v =1, the 35/21 + , 43/21 − and 49/21 + isomeric states are due to seniority v = 5. We have also suggested spins and parities of several unconfirmed states from the recent experimental data.

show abstract

“…In the recent past, several experimental measurements have been done to study the structure and collectivity in the Pb region [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Apart from this, different class of correlations such as pairing, quadrupole and octupole ones are recently reported [17].…”

Section: Introductionmentioning

confidence: 99%

Systematic shell-model study of Rn isotopes with A = 207 to 216 and isomeric states

Bhoy

Srivastava

2021

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

We present systematic large-scale shell-model calculations for Rn isotopes with A = 207 to 216. For the [207][208][209][210][211][212] Rn isotopes, we perform calculations with KHH7B interaction, while for [213][214][215][216] Rn isotopes with KHPE and KHH7B interactions. The calculated energies and electromagnetic properties are compared with the available experimental data and predicted where experimental data are not available. We also suggest spins and parities of several unconfirmed states available from the recent experimental data. Comprehensive study of several isomeric states from the calculated shell-model configurations and half-lives is also reported.

show abstract

Octupole phonon model based on the shell model for octupole vibrational states

Cited by 11 publications

References 45 publications

Evolution of octupole deformation and collectivity in neutron-rich lanthanides

Evolution of octupole deformation and collectivity in neutron-rich lanthanides

Systematic shell-model study of Rn isotopes with $A=$ 207 to 216 and isomeric states

Systematic shell-model study of Rn isotopes with A = 207 to 216 and isomeric states

Contact Info

Product

Resources

About